Cable between solar panel and box

mosfet/relay -

audio-interface for pi

dutch sim-card with good data plan

schottky diode

Objectives

An autonomous floating raft that can be in the water for August.

Just reliable enough autonomous electronics.

Nice looking website that displays live-data.

(Preliminary experiments with a field recorder and hydrophone.)

DIY hydrophone:

Hot glue gun

piezos, omni capsule

audio-interface for pi

omnis

add solar panel

try out cell phone call

>> works, but currently not at same time as data

add hydrophone (covered i2s mic?)

add omni mic

get one klangnetze object in case we want to try higher quality sound

add temperature sensor (neuhold DS18B20)

Sensors

hydrophone (i2s mic?)

Power management

add uC for power management: signal pi to sleep, then cut off power, and wake up after timer. it could also monitor battery voltage and only wake up if time passed AND battery level ok.

since the pi will be sleeping sometimes, we should have a separate monitoring server which can say 'sleeping until 9am, check back then' or so.

given the power consumption of the pi+modem up and running: 2W (5V 400mA), an 11Wh (3000mAh 3.7V) Li-Ion battery only provides around 5.5 operating hours. of course we can use a bigger battery, e.g. a 10000mAh 3.7V lipo (37Wh) should provide around 18 hours of uptime. but it's a balancing act that depends on our charge rate. As our charge rate depends on sun and river power, this will be variable.

(notes after meeting 30.05.2024)

the flow it has is the flow we need

do the work and try outs live and in situ

leave in kessel for at least august

add solar panel so we have a working basis

call the maas

website as a broadcast

start already to design its most minimal website

plan for some presence (liveness) during ddw

d a y t w o

d a y t h r e e

d a y o n e

Host a minimal Maaslab website

sharing also dataflow's embeddedness in the Maas (where it is exactly. how the current is there at the moment, compared to how the current was yesterday, and last week. how much energy it has to stay online, before it needs to go to sleep for a while)

Streaming station

Calling dataflow (what does it have to say?)

Making sounds/music with Maas

Okay we have power, what do we do with it?

Waterwheel and Raft:

Dimensions: 120cm long x 100cm wide and 70cm high

Waterwheel: 8 blades, 70 cm diameter

Location:

Update on Maud's uncle - Kessel

Preference for an urban space

A narrowing space, a decent flow

Maastricht

Jeker

Looking for local guardians - Jan van Eyck?

  • A spot next to a path in a more 'natural' environment



  

waters_of_march.m4a